EP4276054A1 - Insert de soupape principale pour une soupape de soutirage - Google Patents

Insert de soupape principale pour une soupape de soutirage Download PDF

Info

Publication number
EP4276054A1
EP4276054A1 EP22172514.6A EP22172514A EP4276054A1 EP 4276054 A1 EP4276054 A1 EP 4276054A1 EP 22172514 A EP22172514 A EP 22172514A EP 4276054 A1 EP4276054 A1 EP 4276054A1
Authority
EP
European Patent Office
Prior art keywords
thread
main valve
valve insert
elevations
flank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP22172514.6A
Other languages
German (de)
English (en)
Inventor
Stefan Kunter
Michael Wehner
Torben SCHÖRCK
Wolfgang ARTMEIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elaflex Hiby GmbH and Co KG
Original Assignee
Elaflex Hiby GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elaflex Hiby GmbH and Co KG filed Critical Elaflex Hiby GmbH and Co KG
Priority to EP22172514.6A priority Critical patent/EP4276054A1/fr
Priority to PCT/EP2023/061601 priority patent/WO2023217595A1/fr
Priority to AU2023267882A priority patent/AU2023267882A1/en
Priority to ARP230101144A priority patent/AR129276A1/es
Publication of EP4276054A1 publication Critical patent/EP4276054A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/42—Filling nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
    • F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D2210/00—Indexing scheme relating to aspects and details of apparatus or devices for dispensing beverages on draught or for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D2210/00028—Constructional details
    • B67D2210/00141—Other parts

Definitions

  • the subject of the present invention is a main valve insert for a nozzle for dispensing a fluid.
  • a channel for the fluid extends through the main valve insert.
  • the main valve insert further includes a valve seat configured to cooperate with a main valve body of the nozzle to control fluid flow through the channel.
  • the main valve insert includes an external thread for connecting the main valve insert to the nozzle.
  • the invention furthermore relates to an arrangement with a main valve insert and a threaded receptacle for the main valve insert which can be fixed within a nozzle housing, as well as a nozzle comprising such an arrangement.
  • main valve inserts can be screwed into an internal thread located inside the nozzle housing using the external thread and in this way can be securely fixed and positioned.
  • a main valve body which is slidably mounted within the nozzle valve and biased against the valve seat into a closed position, can usually be actuated with the aid of a control lever in order to control a fluid flow through the nozzle valve.
  • the threaded connection between the main valve seat and the internal thread can be loosened in order to remove the main valve insert and thus enable easy access to the main valve insert or to other components present within the nozzle.
  • normal or pointed threads have typically been used for the threaded connection, for example metric threads with a flank angle of 60°.
  • the object of the present invention is to provide a main valve insert for a nozzle for dispensing a fluid, which can be positioned in an exact and simple manner within the nozzle.
  • This task is solved with the features of the independent claims.
  • Advantageous embodiments are specified in the dependent claims.
  • the external thread when viewed in cross section, has a plurality of thread elevations which have an outer flank section and an inner flank section, a flank angle of the thread elevations in the outer flank section being in the range between 25° and 70° and being less than 20° in the inner flank section.
  • a thread pitch of the external thread is more than 2 times the width of the thread elevations measured at a transition between the flank sections.
  • the term fluid can refer to liquid, gaseous or mixed phase substances.
  • the fluid can in particular be a fuel.
  • the cross section under consideration through the external thread runs through a central axis located centrally within the external thread, which extends along the screwing direction of the external thread.
  • the thread elevations are formed by a thread projection which extends helically around the central axis on the outer circumference of the thread insert.
  • the outer flank section is arranged further outward than the inner flank section in relation to the central axis of the external thread. In the course from the inside to the outside, there is a change in the transition between the flank sections flank angle. At the transition, a thread flank of the outer flank section is therefore at an angle to the thread flank of the inner flank section.
  • a longitudinal direction of the valve seat along which a main valve body can be moved to seal the channel can coincide with the central axis of the external thread.
  • the external thread is single-threaded.
  • a two- or multi-start design of the external thread is also possible.
  • a thread elevation preferably has two thread flanks in the outer and/or inner flank section, viewed in cross section, which run essentially in a straight line.
  • the flank angle within the inner or outer flank section is constant in this case. At an external tip of the thread elevations, these can be rounded or flattened. This also includes the case in which the thread flanks have a concave curvature or notches. In this case, the flank angle can be determined between imaginary straight outer contours (envelopes) of the thread flanks.
  • the thread pitch refers to the distance between adjacent thread projections of the external thread.
  • the shape of the thread elevations according to the invention with different flank angles in the area of the outer and inner flank sections and with a large thread pitch compared to the width of the thread elevations leads to a plurality of advantageous properties of a threaded connection that can be achieved using the external thread.
  • the outer flank sections which are at an angle of between 25° and 70° to one another in the manner of a pointed thread, enable a secure hold with a high level of self-locking after a threaded connection has been produced.
  • the thread flanks arranged in the inner flank section which are more inclined relative to the screwing direction or can even be perpendicular to the screwing direction (at a flank angle of 0°), are significantly better suited for force or movement transmission compared to the thread flanks on the outer flank section of the screwing process and thereby enable a more precise positioning of the main valve insert along the central axis of the external thread.
  • the large thread pitch compared to the width of the thread elevations makes it easier to find the thread entry during assembly, so that the external thread can be "threaded" into a suitable internal thread much more easily.
  • a fitter can easily find the start of the external thread by placing the external thread in the axial direction on the internal thread and then turning it counter to the screwing direction until the start of the external thread exceeds a thread entry of an internal thread. Shortly after exceeding, the external thread can be moved relative to the internal thread towards the internal thread along a distance that corresponds to the thread pitch. Since this is large with the external thread, this movement is easily noticeable for the fitter.
  • the easy location of the thread entry can be used to create an exact thread using a specified rotation to achieve a defined thread engagement and an exactly specified axial position of the main valve insert.
  • the fitter can be given a specification that after locating the thread entry in order to produce the threaded connection, a predetermined screw-in angle must be maintained or a predetermined number of rotations of the external thread must be carried out relative to the internal thread. Accurate adjustment of the axial position is important for the operation of the nozzle valve, as this determines the force that the main valve insert exerts on adjacent parts (e.g. seals and/or spring elements).
  • flank angle of the thread elevations in the outer flank section is in the range between 40° and 70°, preferably between 55° and 65°.
  • flank angle of the thread elevations in the inner flank section less than 10° and preferably (approximately) 0°.
  • a flank angle of 0° refers to the case in which the flanks run parallel to each other (i.e. are perpendicular to the central axis).
  • the thread pitch can be more than 1.6 times and preferably more than 2.5 times the width of the thread elevations measured at the transition between the flank sections.
  • the thread pitch can be less than 6 times and preferably less than 3.5 times the width of the thread elevations measured at the transition between the flank sections.
  • a distance between adjacent thread elevations can be between 2.5 mm and 3 mm, preferably between 2.6 and 2.9 mm, more preferably between 2.7 mm and 2.8 mm.
  • the width of the thread elevations measured at the transition between the flank sections can be in a range between 0.5 mm and 1.5 mm, preferably between 0.8 mm and 1.4 mm, more preferably between 0.9 and 1.3 mm .
  • a height of the outer flank section can be between 1.2 mm and 1.8 mm, preferably between 1.4 mm and 1.6 mm, with a height of the inner flank section (25) between 0.8 mm and 1.4 mm, can preferably be between 1 mm and 1.2 mm.
  • the width refers to the extent of the thread elevations viewed in cross section along the central axis of the external thread.
  • the height of the respective flank section denotes the extension of the flank section in the radial direction (i.e. perpendicular to the central axis of the external thread) when viewed in cross section.
  • An outer diameter of the external thread can, for example, be in a range between 26 mm and 65 mm.
  • the outside diameter of the external thread is between 26 mm and 36 mm, preferably between 28 mm and 34 mm, more preferably between 30mm and 32mm.
  • preferred ranges of the outer diameter can also be between (including) 37 mm and 47 mm, between 39 mm and 45 mm or between 41 mm and 43 mm.
  • preferred ranges of the outer diameter can also be (including) between 49 mm and 59 mm, between 51 mm and 57 mm or between 53 mm and 55 mm.
  • Preferred ranges of the core diameter result from the preferred ranges of the outer diameter minus the height of the two flank sections already mentioned above.
  • the external thread has a bottom surface between the thread elevations, the contour of which runs essentially parallel to a cylindrical surface aligned concentrically to the central axis of the external thread.
  • the bottom surface can extend in cross section over a portion of the space between the thread elevations or over the entire space.
  • the central axis forms the center of the cylinder surface.
  • the contour of the bottom surface can assume a helical shape along the cylindrical surface.
  • the bottom surface can also improve the alignment of the external thread in the radial direction.
  • the internal thread can be guided along the bottom surface in the radial direction when producing the threaded connection.
  • the invention furthermore relates to an arrangement comprising a main valve insert according to the invention and a threaded receptacle for the main valve insert which can be fixed within a nozzle housing.
  • the thread receptacle has an internal thread which engages with the external thread, the internal thread having thread recesses into which the thread flanks of the thread elevations located in the outer flank section form a load-bearing threaded connection intervention.
  • the internal thread has a guide projection located between the thread recesses, which extends over at least part of the circumference of the internal thread and which rests in the axial direction on a thread flank of a thread elevation located in the inner flank section.
  • the guide projection rests on the thread flank that is strongly inclined to the central axis (or even perpendicular to it), it fulfills a guide function so that the axial position of the main valve seat is precisely specified during the screwing-in process. It is possible that the guide projection also takes on a supporting function and thereby contributes additionally to the thread strength.
  • the guide projection can also rest in the radial direction on the bottom surface of the external thread and in this way enable radial guidance through which the main valve insert is centered relative to the internal thread.
  • the guide projection can be positioned at a thread entry of the internal thread. This has the advantage that the main valve insert is precisely guided along the central axis of the external thread during the production of the threaded connection.
  • the main valve insert can have guide surfaces positioned in front of the external thread in the screwing-in direction, which are designed in such a way that they are slidably guided by the guide projection when the main valve insert is inserted into the thread receptacle.
  • the guide surfaces can have a maximum diameter adapted to the minimum inside diameter of the internal thread.
  • the guide projection can extend over a circumferential section of the internal thread of at least 90°, preferably at least 180°, more preferably at least 270°.
  • the invention also relates to a nozzle for dispensing a fluid, comprising a nozzle housing, an inlet, an outlet, a main channel for the fluid connecting the inlet to the outlet, a main valve body, a control lever for actuating the nozzle and an arrangement according to the invention.
  • the arrangement according to the invention can be fixed in particular within the nozzle housing in such a way that the channel forms part of the main channel of the nozzle.
  • FIG. 1 shows a nozzle 10 according to the invention in a partially sectioned side view.
  • the nozzle comprises a housing 52, an inlet 50, an outlet 51 and a main channel extending through the nozzle and connecting the inlet 50 to the outlet 51.
  • a threaded receptacle 30, which is provided with an internal thread 31, is fixed within the housing 52.
  • the threaded receptacle 30 can be integrally integrated into the housing 52 or designed as a separate component.
  • the nozzle valve has a main valve insert 20 with an external thread 22 that is screwed to the internal thread 31. Due to the threaded connection between the internal thread 31 and the external thread 22, the main valve insert 20 is positioned within the housing 52 in such a way that a channel 13 extending through the main valve insert 20 forms part of the main channel.
  • the nozzle further has a main valve body 14, which is in the in Figure 1 shown state rests against a main valve seat 21 of the main valve insert 20.
  • the main valve body 14 is connected to a valve piston 16 and is biased into a closed position against the valve seat 21 by a biasing element 15.
  • the nozzle can be operated in a known manner using a control lever 17.
  • FIG 2 shows a three-dimensional view of the main valve insert 20 according to the invention Figure 1 .
  • the external thread 22 of the main valve insert 20 has a thread projection which is helical and concentric to a central axis of the external thread 22 around the outer circumference of the main valve insert 20 extends around.
  • a plurality of thread elevations 23 are visible from the thread projection.
  • FIG 3 shows the main valve insert 20 according to the invention Figure 2 and a thread receptacle 30 before producing a threaded connection in a partially sectioned side view.
  • the internal thread 31 has thread recesses 33 into which the thread elevations 23 of the main valve insert 20 engage when producing the threaded connection.
  • the internal thread 31 includes a guide projection 38 in the area of the thread entrance 37, which extends over a circumferential angle of 360°.
  • the guide projection 38 is designed to interact with guide surfaces 43 when inserting the main valve insert 20, which are arranged at the front end of the main valve insert 20 in front of the external thread 22 in the screwing-in direction.
  • the main valve insert 20 is centered relative to the thread receptacle 30 through the interaction of guide surfaces 43 and guide projection 38.
  • the design of the external thread 22 and the internal thread 31 will be explained in more detail below with reference to Figures 4 to 7.
  • Figure 4 shows a cross-sectional view of two sections of the Figure 3 , in which the external thread of the thread insert 20 (lower part of the Figure 4 ) and the internal thread of the thread holder 30 (upper part of the Figure 4 ) you can see.
  • the cross section is aligned along the central axis of the respective thread.
  • the thread elevations 23 have an outer flank section 24 and an inner flank section 25.
  • a transition between the flank sections 24, 25 is in Figure 4 indicated by a dashed line 42.
  • the thread elevations 23 are each formed by two thread flanks 26, which are aligned with one another at a flank angle of 60°.
  • a thread elevation 23 has two thread flanks 27, which are aligned parallel to one another (i.e. at an angle of 0° to one another).
  • the thread flanks 27 are thus aligned perpendicular to the central axis of the external thread 22.
  • the bottom surface 28 already mentioned above is located between two thread elevations 23.
  • the internal thread 31 also has an inner flank section 35 and an outer flank section 34.
  • a transition between the flank sections 34, 35 is also indicated here by a dashed line 44.
  • the thread recesses 33 are located in the outer flank section 34.
  • the thread recesses 33 are designed in such a way that the thread flanks 26 of the external thread 22 engage in the thread recesses 33 when the main valve insert is screwed in, forming a load-bearing threaded connection. Due to the flank angle of the thread elevations 23 and the thread pitch, a high thread strength with good self-locking can be achieved in this way.
  • the guide projection 38 already mentioned above is located in the left thread recess 33 shown and the middle thread recess 33.
  • the guide projection 38 extends in the radial direction beyond the transition line 44 and has a radial guide edge 39 and axial guide edges 40.
  • the axial guide edges 40 lie on corresponding thread flanks 27 in the inner flank section 25 of the external thread 22 on. This converts the rotation of the main valve set into an axial displacement efficiently and with precise positioning.
  • the interaction of the radial guide edge 39 with the bottom surface 28 ensures that the main valve insert 20 is precisely centered relative to the internal thread 31.
  • the guide projection 38 only extends over part of the circumference of the internal thread 31. Accordingly, in Figure 4 There is no guide projection 38 between the middle thread recess 33 and the right thread recess 33, but rather a flat thread elevation 45 which does not extend beyond the line 44 in the radial direction. In the context of the invention, it has been shown that a guide projection 38 that only extends over a portion of the circumference is already sufficient for radial and axial positioning. In other embodiments, the guide projection 38 can also extend over a larger circumferential angle or over the entire internal thread.
  • Figure 5 shows the arrangement according to the invention Figure 3 in a side sectional view after producing the threaded connection between the external thread 22 and the internal thread 31.
  • Figure 6 shows the in Figure 5 Partial section marked with the letter A in an enlarged view.
  • Figure 7 shows the one in the Figure 5 Detail marked with the letter B in an enlarged view. From the figures it can be seen that the guide projection 38 arranged at the thread entrance 39 of the internal thread 22 is located between two thread elevations 23, with the radial guide edge 39 resting on the bottom surface 28 and the axial guiding edge 40 resting on a thread flank 27 in the inner flank section 25.
  • the central axis 19 of the external thread 22 and the internal thread 31 is also illustrated in this view.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
EP22172514.6A 2022-05-10 2022-05-10 Insert de soupape principale pour une soupape de soutirage Withdrawn EP4276054A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22172514.6A EP4276054A1 (fr) 2022-05-10 2022-05-10 Insert de soupape principale pour une soupape de soutirage
PCT/EP2023/061601 WO2023217595A1 (fr) 2022-05-10 2023-05-03 Insert de vanne principale pour vanne de robinet
AU2023267882A AU2023267882A1 (en) 2022-05-10 2023-05-03 Main valve insert for a tap valve
ARP230101144A AR129276A1 (es) 2022-05-10 2023-05-10 Inserto de válvula principal para válvula dispensadora o de grifo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22172514.6A EP4276054A1 (fr) 2022-05-10 2022-05-10 Insert de soupape principale pour une soupape de soutirage

Publications (1)

Publication Number Publication Date
EP4276054A1 true EP4276054A1 (fr) 2023-11-15

Family

ID=81597856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22172514.6A Withdrawn EP4276054A1 (fr) 2022-05-10 2022-05-10 Insert de soupape principale pour une soupape de soutirage

Country Status (4)

Country Link
EP (1) EP4276054A1 (fr)
AR (1) AR129276A1 (fr)
AU (1) AU2023267882A1 (fr)
WO (1) WO2023217595A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327949A (en) * 1992-10-19 1994-07-12 Emco Wheaton, Inc. Fuel dispensing nozzle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327949A (en) * 1992-10-19 1994-07-12 Emco Wheaton, Inc. Fuel dispensing nozzle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"FUNKTIONBESCHREIBUNG DES GASVENTILS GV3 UND AENDERUNGEN IM ERSATZTEILWESEN", LEAFLET ELAFLEX, XX, XX, 1 December 1994 (1994-12-01), pages COMPLETE, XP000949015 *

Also Published As

Publication number Publication date
WO2023217595A1 (fr) 2023-11-16
AU2023267882A1 (en) 2024-10-31
AR129276A1 (es) 2024-08-07

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